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<div class="header">
  <div class="summary">
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="class_qwt_spline_basis-members.html">List of all members</a>  </div>
  <div class="headertitle">
<div class="title">QwtSplineBasis Class Reference</div>  </div>
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<p>An approximation using a basis spline.  
 <a href="class_qwt_spline_basis.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qwt__spline__basis_8h_source.html">qwt_spline_basis.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtSplineBasis:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a84187686884d133830ea4c94fd57ff17"><td class="memItemLeft" align="right" valign="top"><a id="a84187686884d133830ea4c94fd57ff17"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_basis.html#a84187686884d133830ea4c94fd57ff17">QwtSplineBasis</a> ()</td></tr>
<tr class="memdesc:a84187686884d133830ea4c94fd57ff17"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:a84187686884d133830ea4c94fd57ff17"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a623c89b2080e099bac2c39c0418bfa84"><td class="memItemLeft" align="right" valign="top"><a id="a623c89b2080e099bac2c39c0418bfa84"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_basis.html#a623c89b2080e099bac2c39c0418bfa84">~QwtSplineBasis</a> ()</td></tr>
<tr class="memdesc:a623c89b2080e099bac2c39c0418bfa84"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a623c89b2080e099bac2c39c0418bfa84"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af6be32c8dbfb01f1110504d949088b3b"><td class="memItemLeft" align="right" valign="top">virtual QPainterPath&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_basis.html#af6be32c8dbfb01f1110504d949088b3b">painterPath</a> (const QPolygonF &amp;) const override</td></tr>
<tr class="separator:af6be32c8dbfb01f1110504d949088b3b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1eeb7e3edab36759d523613bb80c69db"><td class="memItemLeft" align="right" valign="top"><a id="a1eeb7e3edab36759d523613bb80c69db"></a>
virtual uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_basis.html#a1eeb7e3edab36759d523613bb80c69db">locality</a> () const override</td></tr>
<tr class="memdesc:a1eeb7e3edab36759d523613bb80c69db"><td class="mdescLeft">&#160;</td><td class="mdescRight">The locality is always 2. <br /></td></tr>
<tr class="separator:a1eeb7e3edab36759d523613bb80c69db"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_spline"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_spline')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_spline.html">QwtSpline</a></td></tr>
<tr class="memitem:a5d1e0ba35c637a88c66d9e4cbaf36e93 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a5d1e0ba35c637a88c66d9e4cbaf36e93">QwtSpline</a> ()</td></tr>
<tr class="memdesc:a5d1e0ba35c637a88c66d9e4cbaf36e93 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor.  <a href="class_qwt_spline.html#a5d1e0ba35c637a88c66d9e4cbaf36e93">More...</a><br /></td></tr>
<tr class="separator:a5d1e0ba35c637a88c66d9e4cbaf36e93 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a90805882826469c94fdc871f18261bb6 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top"><a id="a90805882826469c94fdc871f18261bb6"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a90805882826469c94fdc871f18261bb6">~QwtSpline</a> ()</td></tr>
<tr class="memdesc:a90805882826469c94fdc871f18261bb6 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a90805882826469c94fdc871f18261bb6 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afb4959b1db04dd021b0a49752b66fac3 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#afb4959b1db04dd021b0a49752b66fac3">setParametrization</a> (int type)</td></tr>
<tr class="separator:afb4959b1db04dd021b0a49752b66fac3 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7d2dd1a36183afc5394ee6b39c09bc8c inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a7d2dd1a36183afc5394ee6b39c09bc8c">setParametrization</a> (<a class="el" href="class_qwt_spline_parametrization.html">QwtSplineParametrization</a> *)</td></tr>
<tr class="separator:a7d2dd1a36183afc5394ee6b39c09bc8c inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6aa6f2c0b844e6a27284aa474c6bca7b inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_spline_parametrization.html">QwtSplineParametrization</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a6aa6f2c0b844e6a27284aa474c6bca7b">parametrization</a> () const</td></tr>
<tr class="separator:a6aa6f2c0b844e6a27284aa474c6bca7b inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a48ddb960940cd1bd6d6707dd0ebb8785 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a48ddb960940cd1bd6d6707dd0ebb8785">setBoundaryType</a> (<a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128">BoundaryType</a>)</td></tr>
<tr class="separator:a48ddb960940cd1bd6d6707dd0ebb8785 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7f5f43e9e83fd23210ac528802c0496d inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128">BoundaryType</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">boundaryType</a> () const</td></tr>
<tr class="separator:a7f5f43e9e83fd23210ac528802c0496d inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac14c58e4301b85732c97a4daaf7a9b8b inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">setBoundaryValue</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>, double value)</td></tr>
<tr class="memdesc:ac14c58e4301b85732c97a4daaf7a9b8b inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the boundary value.  <a href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">More...</a><br /></td></tr>
<tr class="separator:ac14c58e4301b85732c97a4daaf7a9b8b inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3a51db25eb5f3e4716fe172ae3ca35ec inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>) const</td></tr>
<tr class="separator:a3a51db25eb5f3e4716fe172ae3ca35ec inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6306d24451d24f16d30880b9114d3052 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">setBoundaryCondition</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>, int condition)</td></tr>
<tr class="memdesc:a6306d24451d24f16d30880b9114d3052 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the condition for an endpoint of the spline.  <a href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">More...</a><br /></td></tr>
<tr class="separator:a6306d24451d24f16d30880b9114d3052 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a77de5f694c70a7c0b34a02c04093fcee inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">boundaryCondition</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>) const</td></tr>
<tr class="separator:a77de5f694c70a7c0b34a02c04093fcee inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa890bace9e318d1bff4fb03ed7d6e9c3 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#aa890bace9e318d1bff4fb03ed7d6e9c3">setBoundaryConditions</a> (int condition, double valueBegin=0.0, double valueEnd=0.0)</td></tr>
<tr class="memdesc:aa890bace9e318d1bff4fb03ed7d6e9c3 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the condition at the endpoints of a spline.  <a href="class_qwt_spline.html#aa890bace9e318d1bff4fb03ed7d6e9c3">More...</a><br /></td></tr>
<tr class="separator:aa890bace9e318d1bff4fb03ed7d6e9c3 inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa2debc778d58c5f53ab757c87f8ac21d inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">virtual QPolygonF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#aa2debc778d58c5f53ab757c87f8ac21d">polygon</a> (const QPolygonF &amp;, double tolerance) const</td></tr>
<tr class="memdesc:aa2debc778d58c5f53ab757c87f8ac21d inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Interpolate a curve by a polygon.  <a href="class_qwt_spline.html#aa2debc778d58c5f53ab757c87f8ac21d">More...</a><br /></td></tr>
<tr class="separator:aa2debc778d58c5f53ab757c87f8ac21d inherit pub_methods_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_types_class_qwt_spline"><td colspan="2" onclick="javascript:toggleInherit('pub_types_class_qwt_spline')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="class_qwt_spline.html">QwtSpline</a></td></tr>
<tr class="memitem:ad82b1f33946d2489511f5e697a32b128 inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128">BoundaryType</a> { <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128af5bf38b7f712e69c699458cd6dfef711">ConditionalBoundaries</a>
, <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171">PeriodicPolygon</a>
, <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1">ClosedPolygon</a>
 }</td></tr>
<tr class="separator:ad82b1f33946d2489511f5e697a32b128 inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a21cca305dad4f1e21437953c4801595a inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a> { <a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">AtBeginning</a>
, <a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">AtEnd</a>
 }</td></tr>
<tr class="separator:a21cca305dad4f1e21437953c4801595a inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af2195032fa62c2b9fe74dc4d44b636cb inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cb">BoundaryCondition</a> { <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028">Clamped1</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba43442b0f55b141b857d6c2ab56cd9afe">Clamped2</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba897bc245acbf65ee2f1801c779de15b3">Clamped3</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a">LinearRunout</a>
 }</td></tr>
<tr class="memdesc:af2195032fa62c2b9fe74dc4d44b636cb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Boundary condition.  <a href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cb">More...</a><br /></td></tr>
<tr class="separator:af2195032fa62c2b9fe74dc4d44b636cb inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>An approximation using a basis spline. </p>
<p><a class="el" href="class_qwt_spline_basis.html" title="An approximation using a basis spline.">QwtSplineBasis</a> approximates a set of points by a polynomials with C2 continuity ( = first and second derivatives are equal ) at the end points.</p>
<p>The end points of the spline do not match the original points. </p>

<p class="definition">Definition at line <a class="el" href="qwt__spline__basis_8h_source.html#l00024">24</a> of file <a class="el" href="qwt__spline__basis_8h_source.html">qwt_spline_basis.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="af6be32c8dbfb01f1110504d949088b3b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af6be32c8dbfb01f1110504d949088b3b">&#9670;&nbsp;</a></span>painterPath()</h2>

<div class="memitem">
<div class="memproto">
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">QPainterPath QwtSplineBasis::painterPath </td>
          <td>(</td>
          <td class="paramtype">const QPolygonF &amp;&#160;</td>
          <td class="paramname"><em>points</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>Approximates a polygon piecewise with cubic Bezier curves and returns them as QPainterPath.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">points</td><td>Control points </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Painter path, that can be rendered by QPainter </dd></dl>

<p>Implements <a class="el" href="class_qwt_spline.html#a34c5ddda039f15ec71de0523d9753b64">QwtSpline</a>.</p>

<p class="definition">Definition at line <a class="el" href="qwt__spline__basis_8cpp_source.html#l00249">249</a> of file <a class="el" href="qwt__spline__basis_8cpp_source.html">qwt_spline_basis.cpp</a>.</p>

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